Move to python 3.12

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.12%. Comparing base (289c1a8) to head (59f23d6). Report is 14 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #706 +/- ## ========================================== - Coverage 95.12% 95.12% -0.01% ========================================== Files 79 79 Lines 3018 3016 -2 ========================================== - Hits 2871 2869 -2 Misses 147 147 ``` | [Flag](https://app.codecov.io/gh/Terralego/TerraVisu/pull/706/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Terralego) | Coverage Δ | | |---|---|---| | [backend-unittests](https://app.codecov.io/gh/Terralego/TerraVisu/pull/706/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Terralego) | `95.12% <100.00%> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Terralego#carryforward-flags-in-the-pull-request-comment) to find out more.

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